Technical Abstract:
Avian paramyxo-serotype-1 viruses (APMV1) with fusion cleavage sites containing two basic amino acids and a phenylalanine (F) at position 117 have been isolated from poultry species in two states from 2007-2009. The intracerebral pathogenicity indices for these viruses are of low virulence at 0.00 and 0.04. The isolates have fusion protein sequences that are 97% similar to wild bird NDV strains on nucleotide and amino acid levels. The mean death time for chicken embryos ranged from 109-1271hrs and for turkey embryos 67-127hrs. Reported here are phylogenetic analyses for the nucleocapsid, phosphoprotein, matrix, hemagglutinin-neuraminidase, and polymerase genes.